Study on properties of NiO-doping PMSZT piezoelectric ceramics sintered at low temperature

摘要

The effects of NiO-doping on the microstructure and piezoelectric properties of PMSZT ceramics were investigated. The experimental results indicate that pure perovskite structure was obtained in the doping range. With the increasing of doping amounts, phases shift from tetragonal phase to rhombohedral phase. The mechanical quality factor (Q_m) , Dielectric constant (ε_r) electromechanical coupling factor (K_p) and piezoelectric constant (d_(33)) increase with the increasing of doping amounts and then decrease, whereas, dielectric loss (tanS) decrease and then increase.